Its 16 A rated continuous current Iu holds steady from 40 °C up to 50 °C without derating — at 55 °C it still carries 15.36 A, and at 70 °C it's still good for 14.4 A. That thermal curve matters when you're packing breakers into a warm enclosure and need to know your actual headroom without guessing. The interrupting ratings tell you where this breaker can live: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 75.6 kA at 415 V covers most European industrial distribution, and the 690 V figure is there for the odd 690 V line but drops to 11.9 kA, so check your available fault current before committing. The shunt trip (STL) is built in, so you can remotely trip the breaker from an E-stop or safety relay. No undervoltage release, no auxiliary contacts, no ground fault monitoring, no communication module. This is a straightforward line-protection breaker, not a metering or smart device.
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. The shunt trip coil is wired separately — verify polarity if it's a DC coil, and confirm the control voltage matches your safety circuit.